baber/WOPTO huggingface dataset:
Patent GB-740490-A (GB)
Title: Improvements in or relating to the arc-melting of high melting point metals or alloys
Inventor: SWAINSON ERIC
IPC: H05B7/02
Filed: 1953-06-19
Abstract: 740,490. Electric arc furnaces. IMPERIAL CHEMICAL INDUSTRIES, Ltd. June 2,1954 [June 19, 1953], No. 16987/53. Class 39(3). In a furnace in which a charge e.g. a metal of high M.P. e.g. titanium is melted by an arc struck between the surface of the metal in a water-cooled crucible and an electrode mounted axially of and above the crucible, the position at which the arc strikes the ingot surface is adjusted by one or more electromagnets placed outside the crucible and providing an adjustable non-radial magnetic field intersecting the path of the arc of sufficient strength to deflect the arc to the required position. The direction of deflection may be adjusted by reversal of current direction in the coil of the electromagnet. The support of the electromagnets may be moved in a direction parallel to the longitudinal axis of the vertical tubular crucible and may be attached to the carrier of upper electrode to move therewith as it is raised on addition of more metal to the crucible, so that the magnets may be maintained in the horizontal plane of the molten ingot surface. A single electromagnet may be mechanically moved in a path around the crucible, so that the arc describes a rotary path ; or several electromagnets disposed around the crucible are arranged in a circuit to cause the arc to be deflected successively to several positions, whereby the anode spot moves in path which is circular or of other desired configuration. Several electrodes each associated with one or more electromagnets independent of those associated with other electrodes, may be employed in a single crucible, which is of non- magnetic material e.g. copper or aluminium. Thus an electrode may have three electrodes associated with it around the crucible 120 degrees apart, and a six position switch enables one or more of the magnets to be activated by current passing in one of two directions. A resistance in the main circuit controls the current in the electromagnet and hence the degree of deflection of the arc.
Patent GB-726791-A (GB)
Title: Improvements in or relating to vibration dampers
IPC: F16F15/023
Filed: 1952-07-07
Abstract: 726,791. Bearing mountings. HOUDAILLEHERSHEY CORPORATION. July 7, 1952 [Sept. 26, 1951], No. 17006/52. Class 12 (1). A mounting for a bearing 15 comprises a housing ring 17 surrounding the bearing and fluid pressure means within the housing for restraining radial movement of the bearing. The ring 17 has annular end closure plates 18 and is provided with annular fluid distributing channels 29, 29 opening to the end plates. The ring 17 is also provided with a number of radial slots 30 which carry slidable vanes 31 engaging the race ring 19 and a floating ring 33 to define chambers 36. Communication between the channels 29 is by means of apertures 34 and fluid is supplied to the chambers 36 through a conduit 39, channels 29, passageways 41, 44 and return check valves 45. Radial grooves 37, 38 are formed in the outer faces of the ring 17 and lead from the upper chamber 36 to the channels 29, 29 and to the atmosphere to allow air to bleed from the system. In operation, when the chambers 36 are filled with oil the bearing 15 may move radially with respect to the ring 17, the chambers in the direction of radial movement being reduced in capacity and the other chambers increased. This will force fluid in the chambers of decreasing volume through notches 35 in the vanes 31 into the chambers of increasing volume. Where the vanes are not provided with notches 35 the leakage of fluid may take place between the chambers past the inner edges of the vanes. The housing may however, be completely filled with oil, the vents 37 and 38 closed, and the ring 19 sealed to the end plates 18 to provide a selfcontained unit. In a modification, the bearing may be mounted exterior of the ring 17 in a spring supported block, the block having a sleeve which coaxially enters the ring 17 and supports a surrounding ring which takes the operative place of the race 19 in the previous embodiment.
Patent GB-1263073-A (GB)
Title: Pin-tumbler locks
Inventor: CHEW IVAN
IPC: E05B27/00
Filed: 1968-04-09
Abstract: 1,263,073. Locks. EATON YALE & TOWNE Inc. 13 March, 1969 [9 April, 1968], No. 17027/68. Headings E2A and E2B. A pin tumbler lock comprises a body 10 and a bore 11 for a rotary plug 12, holes 14 in the body and the cylindrical plug to house spring urged two part pins 15, 13 whereby the plug is rotatable by inserting a key in an aperture in the plug to align the pair of contacting pin surfaces with the periphery of the plug, exterior holes 17 in the body are aligned with the holes 14 and are closed by a spring clip 18 having two limbs one limb of the clip engages in a groove 19 in the body aligned with the holes 17 and the other limb overlying the holes on the outside of the body, the clip having a pressed up part 18a which engages in a hole 17 to retain the clip on the body.
Patent GB-231059-A (GB)
Title: Improvements in and relating to indicating devices for weighing apparatus
IPC: G01G1/04
Filed: 1924-07-16
Abstract: 231,059. Joksch, V. July 16, 1924. Pendulum-weight apparatus. - A weighing machine of the kind in which the load is indicated bv the intersection of two lines one of which is situated on the weigh beam, is characterized in that a pendulum weight four counterbalancing the load is connected directly and rigidly to the weigh beam. In Fig. 1 is shown diagramatically a pendulum balance A, C, S, and a front view of a cylindrical surface of which the arc A, D, B is an edge view. The sine curve L<1>, is obtained by projection from the arc A, D, B upon vertical lines drawn upon an equally-divided line L<2>. If the divisions on the line L<2> represent equal units of weight, the sine curve L<1> in moving downwards will intersect the line L<2> at points corresponding to the loads upon the machine. The weight graduations, instead of being on the line L<2> may be arranged on the sine curve L<1>. The graduations may be made on transparent material and the lines L', L<2> may be formed of thin wires. As shown in Fig. 4 the graduations and the line L<1> are arranged in zigzag formation.
Patent GB-1212416-A (GB)
Title: Heat resisting insulation wall
IPC: H02K44/12
Filed: 1968-04-10
Abstract: 1,212,416. Combustion chamber walls. MITSUBISHI DENKI K.K. 10 April, 1968 [24 April, 1967; 15 June, 1967; 1 Aug., 1967 (3)], No. 17215/68. Heading F4B. [Also in Division H2] A duct wall for a combustion chamber includes at least one heat resisting block of electrically insulating material having one surface exposed to a working fluid and the opposed surface metallized and brazed to a metallic member which is in contact with a cooling fluid. In the simplest form, the refractory blocks, of alumina, magnesia or beryllia, have the metallized surface brazed directly on to a cooling tube, Fig. 6 (not shown). Preferably however, the metallized layers 43 on the blocks 42 are brazed to metallic members 24 which are secured on to protrusions 44 on the wall of cooling tube 34. The gaps between the blocks are filled with a synthetic resin surfaced by refractory material 32, alternatively only refractory material may be used. The surface 10 of the wall may be sealed by a continuous layer of refractory material applied by a plasma torch, Fig. 7 (not shown). The construction may be modified by altering the shape of member 24 to support a plurality of refractory blocks or alternatively it may be replaced by a metal plate which is either an inverted U-shape to provide a cooling channel or attached to a further member of insulating material bored to provide coolant passages. Each block may form a module which can be secured together and sealed with 0-ring seals, Figs. 8 and 12 (not shown).
Patent GB-514931-A (GB)
Title: Improvements relating to cycle wheel-hub spindles
IPC: B62M9/10
Filed: 1938-06-13
Abstract: 514,931. Bearings for bicycle wheel-hubs. BAYLISS, WILEY, & CO., Ltd., and BAYLISS, C. T. June 13, 1938, No. 17445. [Class 12 (i)] The spindle of a free-wheel cycle hub has screw threaded end portions 3, 4, and an unscrewed middle portion 1 to which a double bearing cone 13, 14 is firmly secured. The double bearing cone has two back-to-back ball bearing races supporting the hub 2 and one end of a free wheel unit 11 respectively. The bore of the cone 13, 14 may be plain or splined and driven on to splines 17 formed on the spindle. Alternatively it may be soldered to the spindle.
Patent GB-1101150-A (GB)
Title: N-hydroxy-benzimidazoles and process for their preparation
IPC: A61K31/00
Filed: 1965-12-06
Abstract: Novel benzimidazoles of the formula <FORM:1101150/C2/1> <FORM:1101150/C2/2> (in which either R is a group of the formula (Ia) or a pyridyl or (lower alkyl)-pyridyl group and one of the symbols Ra, Rb, Rc and Rd is lower alkyl, lower alkoxy, halogen, CF3, NO2, NH2, di-lower alkyl-amino, lower alkanoyl or sulphamoyl and each of the others can have one of these meanings or is hydrogen; or in which R is cycloalkyl, cycloalkyl-lower alkyl, cycloalkenyl, cycloalkenyl-lower alkyl, aryl-lower alkyl in which the aryl group may be substituted by one or more of the substituents listed under the values for Ra etc., and Ra and Rb can have any of the above values or can be hydrogen), their N-oxides, and acid-addition and alkali metal salts of these compounds are prepared by the methods disclosed in the parent Specification 1,101,149.
Patent GB-1216910-A (GB)
Title: Sheet-feeding apparatus
IPC: B65H1/12
Filed: 1968-04-11
Abstract: 1,216,910. Feeding sheets. AGFA.GEVAERT A.G. 11 April, 1968 [15 April, 19671, No. 17528/68. Heading B8R. Apparatus for feeding sheets individually from a stack of sheets 14, Fig. 1, comprises a feed-table 11, one or more friction rollers 6, resilient means urging the topmost sheet of the stack against the friction roller(s), which are rotated intermittently. A front stop 15 serving to restrain the stack, and two marginal stops (18, 19), Fig. 2 (not shown), formed with flanges which extend over the margins of the stack, and are spaced slightly away from the upper surface of the stack when the latter is held in contact with the roller(s) 6. The stops are fixed to the main frame of the apparatus, while the table 11 and stack 14 are urged upwards by spring 13. The stops (18, 19) are mounted respectively on laterally adjustable side walls (16, 17), which are preferably provided with downwardly-extending lugs 16a, 16b, 16c passing through corresponding apertures in the table 11 to provide lateral support for the stack during movement of the stack. Feed rollers 30, 31 rotate continuously to deliver partially-separated sheets to an office copying or duplicating machine. The flanges of stops (18, 19) are generally 0À1 to 0À5 mms. above the top of the stack during feeding. In operation, the main body of each stop (18, 19) engages the front end of the topmost sheet at its margin, and cause the centre of the sheet to arch upwards; continued forward movement forces the sheet over the stops to rollers 30, 31.
Patent GB-896596-A (GB)
Title: Steroids and their synthesis
IPC: C07J75/00
Filed: 1958-06-02
Abstract: The invention comprises 11b , 12b -epoxy-pregnane-3a ,20(a  or b )-diol and the 3-esters thereof derived from carboxylic acids preferably, having less than 10 carbon atoms, and a process for the preparation of a compound of the formula <FORM:0896596/IV (b)/1> by dehydrobrominating a compound of the formula <FORM:0896596/IV (b)/2> e.g. by means of a basic reagent or with a salt of a strong base and a weak acid such as potassium carbonate, and a process for the preparation of a compound of the general formula <FORM:0896596/IV (b)/3> wherein R represents hydrogen or an acyloxy group, by reducing a compound of the general formula <FORM:0896596/IV (b)/4> wherein R has the above significance, and dehydrobrominating the resulting corresponding 11b -hydroxy-20(a  or b )-hydroxy compound.  The latter process may be modified in the case where R represents hydrogen by first reducing the 11-keto-12a -bromo-reactant to form a corresponding 11-keto-12a -bromo-20(a  or b )-hydroxy compound, and reducing further the latter compound to form an 11b -hydroxy-12a -bromo-20 (a  or b )-hydroxy compound.  The 11b , 12b -epoxy-pregnane-3a ,20-diol produced by the above processes may be oxidized to 11b , 12b -epoxy-pregnane-3,20-dione, this product may then be treated with hydrogen bromide and bromine to form 4b , 12a -dibromo-11b -ol-3,20-dione, and this product may then be treated with a lithium halide such as the bromide or chloride, in an organic solvent of high dielectric constant such as dimethyl formamide, to form a 12a -halo-11b -hydroxy-progesterone.  The reducing agent used in the above processes may be a complex metal hydride-particularly lithium aluminium hydride for reducing both the 11- and 20-keto groups, and sodium borohydride at a low temperature for first reducing the 20-keto group followed by lithium aluminium hydride for the 11-keto group.  Detailed examples are given.  12a -Bromopregnane-3a -ol-11,20-dione is prepared by treating the corresponding 3-acetate with perchloric acid in methanol. Specification 843,773 is referred to.
Patent GB-416156-A (GB)
Title: An improved grooving or rebating plane or like hand tool
IPC: B27G17/02
Filed: 1933-06-21
Abstract: 416,156. Planes. DOWNING, E., and MONMER FOUNDRY, Ltd., St. Annes Road, Willenhall, Staffordshire. June 21, 1933, No. 17640. [Class 61 (ii).] A grooving &c. plane has a plate-like body a and an edge guiding member comprising a guide strip b disposed below the plane body and upwardly bent parts b<1> slidable on the top of the body and slotted at b2 to engage studs a<2> with securing nuts a<3>. The cutter c is adjustable by a screw a<11> along the inclined face of a boss a<6> on the base a and may be clamped by a screw a' in a cover plate a<10> held by screws a<12>.
Patent GB-833498-A (GB)
Title: Improvements in reheat control systems for gas turbine engines
Inventor: GREENLAND LEONARD SIDNEY
IPC: F02K3/10
Filed: 1956-06-07
Abstract: 833,498. Gas-turbine jet-propulsion plant. HOBSON Ltd., H. M. Aug. 27, 1957 [June 7, 1956], No. 17655/56. Class 110 (3). [Also in Group XI] An aircraft gas-turbine jet-propulsion engine in which reheat fuel is ignited by injecting into the main combustion chamber additional fuel, has an accumulator for the reheat ignition fuel comprising a vessel arranged to fill slowly with fuel during periods when the reheat is switched off, a normally ineffective piston movable in the vessel against a spring to deliver fuel to the igniter jet, a valve for controlling the piston and a device sensitive to the reheat fuel pressure to operate the valve and cause the piston to make a delivery stroke. An accumulator cylinder 13, Fig. 1, is connected through a non-return valve 14 and conduit 15 to an igniter jet arranged in the combustion chamber of the engine before the turbine inlet guide vanes. When the pump system is switched on fuel from the booster pump fills the cylinder 13 through the non- return valve 12. When the pilot selects reheat, the pressure of the fuel supplied to the reheat burners acts on the diaphragm 1 which moves to the left and opens a servo-valve 2. This causes the pressure on the left-hand side of the piston 3 to fall. The piston 3 then moves to the left and opens valve 5 and closes valve 6. The fuel pump delivery pressure in the line 8 is then exerted through the valve 5 on the lower side of the piston 9 which travels upwards against the action of the spring 10 and forces the fuel in the cylinder past a non- return valve 14 to the igniter jet. The pressure of this fuel closes the non-return valve 12. When the pilot returns his lever to the non- reheat position, the valve 5 closes and valve 6 opens. The fuel in the chamber 7 is forced by the spring 10 through the passage 11 and non-return valve 12 into the cylinder 13. As soon as the cylinder 13 is filled the valve 12 closes. In a modification, Fig. 2 (not shown), the main fuel pump is connected to the chamber 7 direct and through a conduit containing an orifice with the cylinder 13. This conduit and the conduit connecting the cylinder 13 with the igniter jet are controlled by two interconnected valves arranged so that when one is open the other is closed. These valves are operated direct by the diaphragm 1. Specification 833,493 is referred to.
Patent GB-356755-A (GB)
Title: Improvements in internal combustion engines
IPC: F02B75/28
Filed: 1930-06-06
Abstract: 356,755. Four-stroke-cycle engines. MAcFARLANE, A. D., P.O. Box 1011, Station C, Los Angeles, U.S.A. June 6, 1930, No. 17667. [Class 7 (ii).] In an engine having an auxiliary charging piston 29 which is actuated by a cam through linkage mechanism, charges of combustible mixture are induced both above and below the piston. The pistons 11, 29 move together during the explosion stroke; the upper piston then rises quickly expelling burnt gases through an exhaust valve 8 and inducing a fresh charge through a valve 32, The piston 29 then returns and compresses the charge between the pistons, and draws in a second charge through a valve 9, the compressed charge between the pistons being transferred to the combustion space through passages 31. Finally, both pistons rise together. The inlet valve 32 is actuated simultaneously with the exhaust valve 8.
Patent GB-1174166-A (GB)
Title: Improvements in electrical inverter stations
Inventor: STACKEGAARD HANS
IPC: H02M7/00
Filed: 1967-04-19
Abstract: 1,174,166. Inverters. ALLMANNA SVENSKA ELEKTRISKA A.B. 19 April, 1967 [20 April, 1966], No. 17927/67. Heading H2F. In an inverter in which the power factor is controlled by an adjustable bank of capacitors 17, a signal is derived indicative of the reactive power and is fed to a control device for the capacitor bank 17 and to the trigger circuits for the inverter 1 in such a way that a reduction in reactive power causes first an increase in the commutation margin of the rectifiers and then a decrease in the capacitance of the capacitor bank the arrangement being such as to ensure a minimum commutation margin. As described, the signal representing reactive power is derived by means of a Hall generator 14 supplied by potential and current transformers 16, 15 and developing a voltage across resistor 20 the polarity of which is dependent on the sign of the effective reactance in the network. When the load is reduced on the network 10, the capacitance of bank 17 tends to be excessive hence the signal from the Hall-generator 14 is such that when fed via control circuits 7, 8 (see Specification 985,674) the delay angle for the rectifiers 2 is decreased. The signal from the Hall-generator is also fed to an electromechanical control device 13 for the capacitor bank so as to reduce the capacitance, correct the power factor and hence cancel the signal from the Hall-generator. The delay angle for the rectifiers 2 is thus restored. When the original load conditions have been re-established, the capacitor bank will be to small and the reactive power in the network will therefore be inductive. A new output signal of opposite polarity will thus be obtained from the Hallgenerator 14 which is fed to control device 13 so as to reset the capacitance. Diode 21, however, prevents the signal from decreasing the commutation margin of the rectifiers 2 beyond a predetermined angle. The trigger circuits for rectifiers 2 include transistors 5 controlled by the combination of signals derived at 8 from the network 10 and at 7 from the current supplied by the D.C. transmission line 90. Fig. 2 (not shown), depicts a simplified arrangement of four inverters 1 connected in series across a three-wire high voltage direct current transmission line and having isolating switches in series with each side of the D.C. line and across each inverter. The Hall-generator 14 is replaced by a potential transformer feeding a rectifier and smoothing capacitor, the output being compared with a D.C. reference voltage.
Patent GB-1219663-A (GB)
Title: Microwave windows
Inventor: BUCKLEY THADDEUS M
IPC: H01P1/08
Filed: 1968-04-16
Abstract: 1,219,663. Waveguides windows; klystrons. VARIAN ASSOCIATES. 16 April, 1968 [20 April, 1967], No. 17973/68. Headings H1D and H1W. A broad-band effect is obtained by disposing a lumped inductive reactance within a waveguide window structure. As shown, the window (which may form the output window of a klystron) consists of two dielectric plates 8, 9 sealed entirely within and across a rectangular waveguide 2 with their outer faces spaced apart by one half-wavelength at the centre frequency of the transmitted band. The inductive reactance consists of two posts 15, 16 extending parallel to the narrow walls 3 of the guide. In a modification, the window consists of a single, thick plate within which the posts are embedded. The posts may be replaced by an inductive iris. The parts forming the inductive reactance may be hollow and may serve for the circulation of a cooling fluid.
Patent GB-564058-A (GB)
Title: Improvements in and relating to electric fuse devices
IPC: H01H85/042
Filed: 1942-12-18
Abstract: 564,058. Fusible cut-outs. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 18, 1942, No. 17993. Convention date, Dec. 26, 1941. [Class 38 (i)] A fuse enclosed in a bushing in the cover of a transformer casing &c. is mounted in a tube having a small bore and a length equal to the product of the voltage and the diameter of the tube divided by a constant having a value between 200 and 400. The tube 16 of fibre may be reinforced by an outer insulating tube 17 and contains the fusible element 23 attached at its ends to a screw plug 18 and a cap 21 in which an aperture 22 allows the escape of gases. In order to prevent the gases entering the bushing 14 in which the fuse is mounted, the space between both the tube 17 and lead 31 and the bushing may be filled with crepe paper 32 that dips into the oil in the transformer casing and becomes saturated. Alternatively, the tube 17 may be fitted with a washer to close the lower end of the bushing 14 and exclude gases and with a ferrule screwed on to its upper end containing insulating compound surrounding the terminal 18. Above this the lead 31 will be surrounded by a wrapping of crepe paper.
Patent GB-136799-A (GB)
Title: An Improvement in Drop-feed Lubricators.
Inventor: PIQUEREZ EMILE
IPC: F16N7/06
Filed: 1919-07-18
Abstract: 136,799. Piquerez, E. Dec. 17, 1918, [Convention date]. Addition to 125,359. Gravity-feed. lubricators.-The shell of a dropfeed lubricator, as described in the parent Specification, is made from a material known as " servinite," which has a basis of celluloid, and is transparent, non-inflammable, and unbreakable.
Patent GB-736593-A (GB)
Title: Improvements in or relating to vibration generating motors
Inventor: CARTER JOHN GEORGE
IPC: H02K33/18
Filed: 1952-07-16
Abstract: 736,593. Reciprocating machines. GOODMANS INDUSTRIES, Ltd. June 10, 1953 [July 16, 1952], No. 18015/52. Class 35. The moving coil of a magnetic vibratory device which is connected to the supply is located in an annular air gap formed by the tip of a permanent magnet 1 and a front plate 4, and it is carried by a former 12 having a cap portion 13 (also called an armature). The latter is secured to a rod 8 freely extending through the magnet assembly. The other end of the rod 8 is formed to be connected to a member to be vibrated and it also carries pick-up coils 19 arranged to be vibrated within a ring-shaped permanent magnet 15 so as to induce in the coils 19 a voltage which is proportional to the frequency and amplitude of the oscillations. Specification 736,631 is referred to.
Patent GB-1538230-A (GB)
Title: Coating carbon electrodes
IPC: C11D7/60
Filed: 1975-05-01
Abstract: A method of prolonging the useful life of a partially consumed electric arc furnace electrode which comprises holding the electrode in a fixed position, moving a plurality of electrode protection sheets substantially radially of the major axis of the electrode towards the electrode and pressing the sheets into contact with the electrode for a sufficient time to adhere the sheets to the surface of the electrode.